The diagnostic characteristics of melanoma A reader asked me to look into the claims that sunscreens cause cancer, especially the claims made by Elizabeth Plourde. When our own Scott Gavura evaluated sunscreens, he concluded: The data on sunscreen use and cancer risk are complex, but on balance suggest that the short-term and long-terms benefits of

3D model of dichlorodiphenyltrichloroethane (DDT), an insecticide I think everyone would agree that it would not be a good idea to put pesticides in a saltshaker and add them to our food at the table. But there is little agreement when it comes to their use in agriculture. How much gets into our food? What